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// mostly for testing mongos w/replica sets
//
// This test involves using fsync to lock the secondaries, so cannot be run on storage engines which
// do not support the command.
// @tags: [requires_fsync]
(function() {
var s = new ShardingTest({ shards: { rs0: { nodes: 2 }, rs1: { nodes: 2 } },
chunkSize: 1 });
var db = s.getDB("test");
var t = db.foo;
s.adminCommand( { enablesharding : "test" } );
s.ensurePrimaryShard('test', 'test-rs0');
// -------------------------------------------------------------------------------------------
// ---------- test that config server updates when replica set config changes ----------------
// -------------------------------------------------------------------------------------------
db.foo.save( { _id : 5 ,x : 17 } )
assert.eq( 1 , db.foo.count() );
s.config.databases.find().forEach( printjson )
s.config.shards.find().forEach( printjson )
serverName = s.getServerName( "test" )
function countNodes(){
var x = s.config.shards.findOne( { _id : serverName } );
return x.host.split( "," ).length
}
assert.eq( 2 , countNodes() , "A1" )
rs = s.getRSEntry( serverName );
rs.test.add()
try {
rs.test.reInitiate();
}
catch ( e ){
// this os ok as rs's may close connections on a change of master
print( e );
}
assert.soon(
function(){
try {
printjson( rs.test.getMaster().getDB("admin").runCommand( "isMaster" ) )
s.config.shards.find().forEach( printjsononeline );
return countNodes() == 3;
}
catch ( e ){
print( e );
}
} , "waiting for config server to update" , 180 * 1000 , 1000 );
// cleanup after adding node
for ( i=0; i<5; i++ ){
try {
db.foo.findOne();
}
catch ( e ){}
}
jsTest.log( "Awaiting replication of all nodes, so spurious sync'ing queries don't upset our counts..." )
rs.test.awaitReplication()
// Make sure we wait for secondaries here - otherwise a secondary could come online later and be used for the
// count command before being fully replicated
jsTest.log( "Awaiting secondary status of all nodes" )
rs.test.waitForState( rs.test.getSecondaries(), rs.test.SECONDARY, 180 * 1000 )
// -------------------------------------------------------------------------------------------
// ---------- test routing to slaves ----------------
// -------------------------------------------------------------------------------------------
// --- not sharded ----
m = new Mongo( s.s.name );
ts = m.getDB( "test" ).foo
before = rs.test.getMaster().adminCommand( "serverStatus" ).opcounters
for ( i=0; i<10; i++ )
assert.eq( 17 , ts.findOne().x , "B1" )
m.setSlaveOk()
for ( i=0; i<10; i++ )
assert.eq( 17 , ts.findOne().x , "B2" )
after = rs.test.getMaster().adminCommand( "serverStatus" ).opcounters
printjson( before )
printjson( after )
assert.lte( before.query + 10 , after.query , "B3" )
// --- add more data ----
db.foo.ensureIndex( { x : 1 } )
var bulk = db.foo.initializeUnorderedBulkOp();
for ( i=0; i<100; i++ ){
if ( i == 17 ) continue;
bulk.insert({ x: i });
}
assert.writeOK(bulk.execute({ w: 3 }));
// Counts pass the options of the connection - which is slaveOk'd, so we need to wait for
// replication for this and future tests to pass
rs.test.awaitReplication()
assert.eq( 100 , ts.count() , "B4" )
assert.eq( 100 , ts.find().itcount() , "B5" )
assert.eq( 100 , ts.find().batchSize(5).itcount() , "B6" )
t.find().batchSize(3).next();
gc(); gc(); gc();
// --- sharded ----
assert.eq( 100 , db.foo.count() , "C1" )
s.adminCommand( { shardcollection : "test.foo" , key : { x : 1 } } );
// We're doing some manual chunk stuff, so stop the balancer first
s.stopBalancer()
assert.eq( 100 , t.count() , "C2" )
s.adminCommand( { split : "test.foo" , middle : { x : 50 } } )
db.printShardingStatus()
other = s.config.shards.findOne( { _id : { $ne : serverName } } );
assert.commandWorked(s.getDB('admin').runCommand({ moveChunk: "test.foo",
find: { x: 10 },
to: other._id,
_secondaryThrottle: true,
writeConcern: { w: 2 },
_waitForDelete: true }));
assert.eq( 100 , t.count() , "C3" )
assert.eq( 50 , rs.test.getMaster().getDB( "test" ).foo.count() , "C4" )
// by non-shard key
m = new Mongo( s.s.name );
ts = m.getDB( "test" ).foo
before = rs.test.getMaster().adminCommand( "serverStatus" ).opcounters
for ( i=0; i<10; i++ )
assert.eq( 17 , ts.findOne( { _id : 5 } ).x , "D1" )
m.setSlaveOk()
for ( i=0; i<10; i++ )
assert.eq( 17 , ts.findOne( { _id : 5 } ).x , "D2" )
after = rs.test.getMaster().adminCommand( "serverStatus" ).opcounters
assert.lte( before.query + 10 , after.query , "D3" )
// by shard key
m = new Mongo( s.s.name );
m.forceWriteMode("commands");
db.printShardingStatus()
ts = m.getDB( "test" ).foo
before = rs.test.getMaster().adminCommand( "serverStatus" ).opcounters
for ( i=0; i<10; i++ )
assert.eq( 57 , ts.findOne( { x : 57 } ).x , "E1" )
m.setSlaveOk()
for ( i=0; i<10; i++ )
assert.eq( 57 , ts.findOne( { x : 57 } ).x , "E2" )
after = rs.test.getMaster().adminCommand( "serverStatus" ).opcounters
assert.lte( before.query + 10 , after.query , "E3" )
assert.eq( 100 , ts.count() , "E4" )
assert.eq( 100 , ts.find().itcount() , "E5" )
printjson( ts.find().batchSize(5).explain() )
// fsyncLock the secondaries
rs.test.getSecondaries().forEach(function(secondary) {
assert.commandWorked(secondary.getDB( "test" ).fsyncLock());
})
// Modify data only on the primary replica of the primary shard.
// { x: 60 } goes to the shard of "rs", which is the primary shard.
assert.writeOK( ts.insert( { primaryOnly: true, x: 60 } ) );
// Read from secondary through mongos, the doc is not there due to replication delay or fsync.
// But we can guarantee not to read from primary.
assert.eq( 0, ts.find({ primaryOnly: true, x: 60 }).itcount() );
// Unlock the secondaries
rs.test.getSecondaries().forEach(function(secondary) {
secondary.getDB( "test" ).fsyncUnlock();
})
// Clean up the data
assert.writeOK( ts.remove( { primaryOnly: true, x: 60 }, { writeConcern: { w: 3 }} ) );
for ( i=0; i<10; i++ ) {
m = new Mongo( s.s.name );
m.setSlaveOk();
ts = m.getDB( "test" ).foo
assert.eq( 100 , ts.find().batchSize(5).itcount() , "F2." + i )
}
for ( i=0; i<10; i++ ) {
m = new Mongo( s.s.name );
ts = m.getDB( "test" ).foo
assert.eq( 100 , ts.find().batchSize(5).itcount() , "F3." + i )
}
printjson( db.adminCommand( "getShardMap" ) );
s.stop();
})();
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